Sharpener



FIG. 1 is a right perspective view of a sharpener;

FIG. 2 is a left perspective view of the sharpener shown in FIG. 1;

FIG. 3 is a rear view of the sharpener shown in FIG. 1;

FIG. 4 is a front view of the sharpener shown in FIG. 1;

FIG. 5 is a right view of the sharpener shown in FIG. 1;

FIG. 6 is a left view of the sharpener shown in FIG. 1; and,

FIG. 7 is a top view of the sharpener shown in FIG. 1.

The designations of the views below as top, bottom, right side, left side, front, and rear are for ease of discussion only and are not intended to limit the sharpener to one particular orientation. The sharpener can be oriented in other directions which would alter these designations. The views are not necessarily shown in the same scale, and any change in scale between different views is not intended limit the sharpener to a particular size. 

CLAIM The ornamental design for a sharpener, as shown and described. 